Traversing roll for winding and like machines



Dec. 26; 1939; Y F. PARKS; 2,184,723

TRAVERSING ROLL FOR WINDING AND LIKE MACHINES I Filed Feb. 24, 1938 3Sheets-Sheet 1 Dec. 26,1939. EQ F, PM; 2,184,723

TRAVERSING ROLL FOR WINDING. AND LIKE MACHINES Filed Feb. 24, 1938 sShets-Sheet 2 Dec. 26, 1939. E F PARKS 2,184,723

TRAVERSING ROLL FOR wmnme AND LIKE MACHINES Filed Feb. 24, 1938 sSheets-Sheet 5 Patented Dec. 26, 1939' iso STATES TRAVERSING ROLL FORWINDING AND r 1 MACHINE Edward F. Parks, Providence, R. L, assignor toUniversal Winding Company, Cranston, E. 1., a corporation ofMassachusetts Application February 24, 1938, Serial No. 192,350

' 12 Claims.

This invention relates to an improved traversing roll or drum forguiding a strand or strands of yarn or the like back and forthlongitudinally of the spindle of a Winding machine to wind a cop orpackage or for similar purposes. The present improvements areparticularly adapted to a grooved traversing roll or drum of thecharacter shown in United States Letters Patent No. 1,749,355 granted toFranklin A. Reece on March 19 4, 1930, but are also applicable to othertypes of rolls or drums ha ing helical or part helical formations ontheir peripheries for enga and traversing strands of yarn or the like.

The traversingroll of the Reece patent is illustrated and described asbeing constructed as a cylinder made in one piece and a particularobject of the present improvement is to provide a roll constituted by aplurality of complementary sections assembled as a ifnit.

Another object of the invention is to provide a sectional traversingroll or drum having a grooved peripherywith its sections adapted to bemolded from plastics or like materials such as the phenol condensationproduct known by the trade-name Bakelite; or from glass, porcelain, andother ceramic and like plastics.

Another object of the invention is to provide a grooved traversing rollor drum constituted by a plurality of sections formed without grooves ontheir peripheries but adapted to be assembled with their end facescooperating to form helical grooves on the circumference of the roll.

Another object of the invention isto provide a traversing roll or drumof hollow sectional 85 structure whereof the parts may be more cheaplyshaped or molded. v

Another object of the invention is'to provide a traversing roll or drumof sectional structure whereof if one or more of the parts become brokenor damaged the roll'may be repaired by merely substituting acorresponding part or parts for the broken ones. Another object of the.invention is to provide 5 a sectional traversing roll or drum which maybe economically manufactured from-materials affording maximum resistanceto wear to render it more durable in use for the purposes specified.

Further objects of the invention are set forth 5 in the followingspecification which describes a preferred form of construction of theimproved traversing 'rollor drum, by way of example, as

illustrated by the accompanying drawings. In the drawings:

Fig. 1 is a side view of an improved traversing" (Cl. 2&2-43) roll ordrum constructed inaccordance with the present invention;

Fig. 2 is an end view of the same; Fig. 3 is a composite view showingthe several sections of the traversing roll or drum in disassembledrelationship;

Fig. 4 is a view of the opposite side of the roll from that shown inFig. 1;

Fig. 5 is a composite view of the disassembled sections of the traversngroll viewed in the same direction as in Fig. i;

Fig. 6 is a longitudinal sectional view of the traversing roll on line6-4: of Fig. 2; I

Fig. '1 is a view of the left-hand section of the roll viewed in thedirection indicated by the ar-. 15 row I in Fig. 3;

Fig. 8 is an end view of one of the comple mentary intermediate sectionsof the roll viewed in the direction indicated by the arrow 8; and

Fig. 9' is a sectional viewsimilar to Fig. 6 on 20 .line- 9-9 of Fig, 2.

The use of rotary traversing rolls in winding Y machines came with theinception of the device shown and described in the Reece patent,hereinabove referred to, and marked a long step in 25 advance in the artof winding as providing for high speed operation of the machine;elimination of vibration and consequent shock and wear on the parts, dueto the displacement of reciproeating or oscillating traverse-guides; andfur- 30 ther, in generally reducing the ,cost of manufacture of themachines and improving their product. The Reece rolls have in someinstances been constructed-of metal, but are usually molded fromplastics such as Bakelite? in which case 85 ,the molds are complicatedand expensive to make. Moreover, where the roll or drum is -molded inone piece it requires extreme care in' operating the molds to preventdefects which, even though slight, will prevent proper opera- .40

.tion of the roll in the winding machine. With the present improved formof roll constructed in sections the molds may be of simpler form andoperated with greater facility so that the complete roll or drum is lesscostly'to manufacture. 46 Furthermore, a defect in one section of theroll, due to improper molding or. other causes, can be corrected bysupplying a corresponding perfect part and thus there is much less lossfrom spoil- 7 age. Likewise, as before indicated, damage to or 50breakage of any part of the sectional roll or drum can be repaired bymerely replacing the defective section with a perfect one.

The present drawings illustrate the invention as consisting of asectional traversing roll of substantially the same grooved form asshown and described in the aforementioned Reece patent, but it is to beunderstood that the invention is applicable to other types of traversingrolls or drums having helical or part-helical formations on theirperipheral surfaces for guiding a strand to traverse it in oppositedirections lengthwise of the roll.

Referring first to Figs. 1, 2 and 3 of the drawings, the presentimproved traversing roll or drum 2 is herein shown as comprising sixsections, being divided substantially in line with the helical grooveswhich extend in opposite directions encircling the periphery of theroll. While in some cases the groove of grooves on the roll may have auniform pitch as illustrated in the Reece patent, the roll shown in thepresent drawings is formed with what is termed as accelerated" lead orpitch; that is, its pitch or lead increases gradually from one end ofthe roll to the other. In general, the two end sections 3 and 4 of theroll are of substantially the same construction, the left-hand endsection 3 as shown in Figs. 3 and 5 being of somewhat greater width orthickness than the opposite end section 4 due to the accelerated pitchof the grooves. All the sections of the roll are of hollow cylindricalform and the intermediate sections 5, 6, I and 8 have their end faces ofcomplementary shape to cooperate with those of adjacent sections to formthe grooves when the parts are assembled as shown in Figs. 1 and 4.

The cylindrical walls of the several sections of the roll may be made ofany desired thickness and are preferablyof substantial dimension to givestrength and solidity to the structure. Referring to Figs. 6 and 9 ofthe present drawings, which illustrate the roll in longitudinalsectional view, the parts of the cylindrical shell or roll proper arepreferably constructed of plastic material with the end sections 3 and 4mounted on hubs 9 and I constructed of metal. The hubs 3 and Iii are letinto enlarged bores in the end sections 3 and 4 and extend therethroughinto counterbores in the next adjacent sections and 8, respectively. Thehubs 9 and ID are bored axially to receive a shaft such as that shown atl5 for rotatably mounting and driving the roll in the winding or othermachine. As herein illustrated, the roll 2 is held fast on the shaft I5by means of set-screws l6 screwed into radially-extending threaded holesI! in the hubs 9 and ill to bind against the shaft. It will be noted byreference to Fig. 6 that'the end sections 3 and 4 of the roll areprovided with radial holes l8 registering with the threaded holes I! inthe hubs 3 and. It) to permit insertion and. adjustment of the screws IEto key the roll to the shaft. In other instances, however, the endsections 3 and 4 of the roll may be constructed 'with integral hubshaving axial bores fitted to the shaft I 5 on which the roll is mounted.In such case, the setscrews may be threaded into metal bushings inradial holes in the end sections. In still other instances the roll maybe mounted to rotate on its supporting shaft and be driven by othermeans such as a pulley or gear attached to its end. Preferably, theouter faces of the end sections 3 and 4 are undercut or recessed to formrelatively narrow flanges l9 at the periphery of the roll I tofacilitate grinding for squaring the endsof the roll.

Referring still to Figs. 6 and 9,-i t will be observed that each of theintermediate sections 5, 6. 1 and 3 of the roll has sleeve-like portions20.

2|, 22 and 23, projecting at their ends .and corresponding in outsidediameter to that ofthe metal end hubs 9 and ill. The walls of thesesleevelike portions are of less thickness than the main walls of theroll'and terminate in planar end faces normal to the axis of the roll.Thus, the roll is divided on its interior into a series of cylindricalcomponents of substantially the same length axially and having abuttingfaces disposed in planes normal to the axis of the roll as shown mostclearly in Fig. 6. I

The several sections of the roll areadapted'to be connected or tiedtogether by one or more longitudinally-extending rods or bolts '25 shownmost clearly in Fig. 9. The bolts 25 project through lateral bores 26 inthe end hub II) with their heads seated in counterbores 21. The oppositeends of the bolts 25 are screwed into threaded holes 28 in the end hub9. By tightening the bolts 25 the several parts of the roll may be drawntogether with the flat faces of their sleeve-portions in abuttingrelationship to properly relate the helical faces of the sections andprovide a firm and stable structure.

The projections at the ends of the sections of the roll may be ,soconstructed as to interlock to prevent relative .rotary movementtherebetween; or their sleeve-portions may be'formed with interlockingtongue-and-slot formations. As herein shown, a tongue or key 30 on thehub 9 of the end section 3 engages in a slot or opening 3| in the end ofthe sleeve-portion 20 of the next section 5; a similar key 32 at theopposite end of the sleeve-portion 20 interfits with a slot 33 in theend of the sleeve-portion2l of the next section 6; and so on throughoutthe whole series of the complementary parts, the section 8 having a key36 which engages in a slot 31 in the end of the hub of the end section4.

As has been stated, the roll 2 is divided into its sections followingthe helical course of the grooves which define the path of traverse ofthe yarn from one end of the roll to its other end and back again in theopposite direction. The end faces of the several sections are generatedon reverse helices and vary somewhat in inclination with respect to theaxis of the roll in the manner of a screw thread. When the sections areassembled as shown in Figs. 1 and 4 the outer peripheries of the hubs 9and I0 and the sleeveportions 20, 2|, 22 and 23 form the bottom walls ofthe grooves as shown most clearly in Figs. 6 and 9. One groove,indicated by the reference character 40, leads from the left-hand end ofthe roll 2 helically toward the right-hand end,

as viewed in Fig. 1, with a pluraiity of turns of right-hand pitch untilit reaches the opposite end of the roll at 4| where it joins the reversegroove 42. The reverse groove 42 extends in the opposite direction witha left-hand lead until it merges into the opposite groove 40 at thelefthand end of the roll as indicated at 43. That is to say, the twogrooves, or parts of a continuous groove as the roll is hereinillustrated, traverse the roll helicallyinopposite directions and arejoined at their ends with relatively sharp reversal points. I

In the present illustration of the invention each groove is shown asencompassing the roll in two and one-half turns or convolutions, whichis an arbitrarily selected form of construction, to adapt the roll ordrum to wind that number of turns on the holder at the start of thepackage.

In other cases; however, the roll may be con-' of the roll they cross atseveral points. twice on Y each side of the roll. in other instanceswhere the grooves make an even number of turns or convolutions. as forexample four turns in each direction, there will be four points ofcrossing on one side of the roll and three points on the op.- positeside as illustrated in the Reecepatent, before referred to. As set forthat length in the specification of this latter patent, it is necessarythat the grooves be so formed at their crossing points as to preventreversal in the direction of traverse of the strand at the junction ofthe grooves. For this purpose the bottom profile of the grooves isaltered at the crossing points by making one groove of less depth thanthe opposite groove so that the strand will ride up toward or to thesurface of the roll as it is guided in one groove to cause it to passover the reverse groove. As a further provision for preventing diversionof the strand from one groove into the reverse groove at the points ofcrossing, the portion of the groove beyond the crossing point is widenedto catch the strand. Stated briefly, at

points where the strand would have a tendency to be diverted from onegroove into the groove of opposite handthe groove in which the strand isbeing guided has a widened mouth or entrance portion at its receivingend to capture the strand as it is lifted to pass across the oppositegroove. This peculiar formation of the grooves may be varied, forexample, as shown in United States Letters Patent to Anton E. Bood, No.1,836,105, dated December 15, 1931, where the opposite portions of thegrooves at the crossings are offset one with respect to the other tofunction in the same way to capture the strand as it is raised or liftedto cross the. groove of opposite direction. Still other forms'ofconstructions of the grooving may be employed to prevent reversal of thestrand until it has been traversed from one end of the roll toitsopposite end and the present invention is applicable to any such formsof grooving the' roll or of shaping its periphery whereof to guide thestrand continuously from end to end of the roll.

In the present embodiment of the invention the bottom profile of thegrooveor grooves is raised at the-crossing points by providingprojections from the side of one section of the roll overlying thesleeve-portion of an. adjacentrollsection. Extensions from the end facesat certain locations on the roll sections project into recesses in thefaces of adjacent sections. Referring to Fig. 3 of the drawings, it willbe noted that the end section 3 of the roll is formed with a lug 45projecting at one side of the point where itshelically-generated facemeets the face of oppositely-extending helix. When the end section 3 isassembled incooperative relationship with the next section 5 thelug 45will project in under the pointed portion '46 of the latter 'section, asshown in Fig. 1, in overlying contact with the cylindrical face of thesleeve-portion 20 so that it forms a .rc'unded hump or protuberancethereon to raise the profile of the bottom of the groove outwardlytoward the periphery of the roll. Opposite the point 45 of the section 5its right-hand face merges into a spear-shaped lug or projection 41, theright-hand side of which is rounded to underlie the inwardly-beveledface of the helically-generated side of the next section 5, see Fig. 1.The lug 41 has a rectanguiarly-shaped bevel-sided extension 48 whicherrters a similarly shaped recess 49 in'the end of the avoid leaving acrack or opening liable to catch the strand. I

On the side of the crossing where the lug 41 is of the section 5 of theroll, this formation providing areentrant mouth to capture the strand asit is lifted above the bottom or floor of the groove on the lugs 45 and41. The widened mouth of the groove 40 may be formed by beveling the endface 55 of the section 5 at an angle to a plane normal to the axis ofthe roll or by any'other similar construction.

, Referring to Fig. 5 of the drawings, it will be noted that the shapeof the section 6 is substantially the same as that of the section 5except that the position of the lug 41 is reversed. Likewise, section 1is of substantially the same form to adapt it to interfit with section 6and sections 1 and 8 have their end faces of complementary form insubstantially the same arrangement; in each case there being a lug orprojection on one section which underlies a portion of an adjacentsection and forms a raised protuberance or hump for lifting the strandacross an intersecting groove. As shown in Fig. 5 the opposite side of.

section 5 from that illustrated in Fig. 3 has a lug 5| of slightlydifferent form from the projections 7 previously described. The lug 51has a generally arcuate shape throughout the whole width of itsouter'face with a narrower rounded portion 52 projecting from its end.The projection 52 is adapted to seat in a substantially round hole 53 inthe end wall of the end section 3, see Fig. '1, thus serving as sort ofdowel between the parts. At either side of the hole 53 the end face ofthe section 3- is recessed at 54 to receive the arched main portionofthe lug 5l. The joint between.

When the several sections of the roll are assem-- bled and tied togetherby means of the bolts 25 the ends of the hubs 9 and I0 and thecylindrical sleeve-portions 20, 21, 22 and 23 abut to locate the helicalfaces of the sections in spaced-apart relationship to form the reversegrooves with the peripheries .of the cylindrical hubs and sleevesconstituting the bottom wallsof the grooves.

' The bolts 25 serve to hold the parts of the roll in connection so thatit may be handled as a unit for application to the winding or othermachine in which it is to be used.

' It will be observed from the foregoing that the present inventionprovides an ingenious construc- 15 located the groove 40 is widened bycutting away the helically-generated face at the right-hand end i tionof sectional traversing roll or drum, the parts of which may be morereadily and inexpensively molded from plastics or ceramics whileinsuring a more durable construction. Moreover. the Present improvedsectional roll has the advantage of being subject to repair by replacingany one'or out departing from the spirit or scope of the invention.Therefore, *without limiting myself in this respect, I claim:

1. A strand-traversing'roll for winding and other machines comprising aplurality of interfitting cylindrical sections shaped at their ends toform grooves on its periphery extending heli,--

cally in" opposite directions and adapted to receive and guide astrandor strands.

2. A strand-traversing roll having helical guiding paths formed on itsperiphery for directing a strand longitudinally thereof from end to endof the roll, said roll'divided across its. axis into a plurality ofcomplementary sections following the helical conformation of theyam-guiding paths to facilitate molding it from plastics or ceramics.

3. A strand-traversing device: consisting in a rotary element having onits peripheral surface a groove or grooves extending helically' thereofin opposite directions, said element being divided angularly of its axisinto a plurality of complementary sections following the helicalconformation of the grooves. A

4. A strand-traversing roll of the type indicated divided longitudinallyacross its axis into a plurality of complementary sections with the endfaces of adjacent sections cooperating to, provide helically-extendingguiding paths of opposite hand for receiving and guiding a strand orstrands:

5. A strand-traversing roll divided longitudinally across its axis intoa plurality of complementary sections with the end faces of adjacentsections cooperating to provide helically-extending yarn-guiding pathsof opposite hand, and means for clamping said sections together to forma unitary structure.

enemas 6. A strand-traversing roll of the type indicated comprising aplurality of complementary sections having their end faces generated onopposite helices and cooperating to form grooves on the periphery of theroll, the bottom walls of the grooves being formed by substantiallycylindrical portions of the sections.

7. A strand-traversing roll of the type indicated comprising a pluralityof hollow cylindrical sections having their end faces generated onopposite helices and provided with interior cylindrical portionsterminating in planar faces adapted to abut to space the helical facesof the sections apart whereof to provide grooves with the bottom of thegroovesjformed by the peripheries of the cylindrical portions of thesections.

18. A strand-traversing roll of the type indicated constituted by aplurality of interfitting cylindrical sections having their end facesgenerated on oppositely-extending helices and formed with interiorsleeve-like portions having abutting planar. faces for spacing thehelical faces of the sections to form grooves of rightand left-handpitch.

9. A strand-traversing roll constituted by 'intermediate and endsections of cylindrical shape having complementary helicaliy-extendingfaces forming channels on the periphery of the roll for receiving andguiding a strand in opposite directions from end to end of the roll.

10. A strand-traversing roll comprising a plurality of cylindricalsections having complementary end faces forming helical groovesextending in opposite directions and crossing each other at intervals.

11. A strand-traversing roll comprising a plurality of cylindricalsections having complementary-end faces forming helical groovesextending in opposite directions and crossing each other .at intervals.said grooves profiled of less depth adjacent their points of crossing.

12. A strand-traversing roll comprising a plurality of cylindricalsections having complementary end faces forming helicalgrooves'extending in opposite directions and crossing each other atintervals, said grooves profiled of less depth at their points ofcrossing and a portion of each groove being widened at one side of thegroove which it crosses. EDWARD F. PARKS.

